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<title>Names and Numbers in data files</title>
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<h3>Data file structure:  Names and numbers</h3>

<p><nobr><b>General:</b></nobr><br>

Data in the input files must be separated by either commas, blanks, or
end-of-line. Example:</p>
<p class="indent">
<pre>Fe 3+,  -13.02    0 -1  1
Fe(OH)2 ,  -20.8    -2  0  1</pre>
</p>
<p>Names and texts may contain &#147;space&#148;, like
<nobr>&#147;<tt>Fe 3+</tt>&#148;,</nobr> and therefore they
must end with either a comma or an end-of-line. This also means that a comma can not
be included in a chemical name: <nobr>&#147;<tt>Fe(OH)2,am</tt>&#148;</nobr>
is an illegal name.</p>

<p><u>Comments</u> can be added at the end of any line after a slash (/) when it follows
either a comma or white space. For example:</p>
<p class="indent">
<nobr><tt>H+, e&#8722;, Cu+2 / Three components</tt></nobr>
</p>

<p>Therefore, a <nobr>&#147; /&#148;</nobr> (a space followed by a slash) can
not be included in the text identifying a chemical species!
For example <nobr>&#147;<tt>1/2 Fe2O3</tt>&#148;</nobr> is acceptable, but
<nobr>&#147;<tt>Fe2O3 /2</tt>&#148;</nobr>
will give unpredictable results.</p>

<p><b>Names of chemical <nobr>species:</b></nobr><br>
As mentioned above, a name can not contain a comma (,) and it can not contain a slash
following a space <nobr>(&nbsp;/).</nobr></p>
<ul>
<li><a href="SP_Phase_Indicator_Names.htm">Phase Type</a> (solid, gas, etc).</li>
<li><a href="SP_Charges_in_Names.htm">Electric Charges</a></li>
<li><a href="SP_Removing_Species.htm">Removing species <nobr>with &#147;*&#148;</nobr></a></li>
<li><a href="SP_Species_Zero_Conc.htm">Species with zero concentration</a>
<nobr>(e<sup>&#8722;</sup>,</nobr> <nobr>H<sub>2</sub>O,</nobr> gases,
<nobr>&#147;*&#148;)</nobr></li>
</ul>

<p><nobr><b>Numbers:</b></nobr><br>
Real values can be entered with or without decimal point (i.e.,
<nobr><tt>10.0</tt>,</nobr> or <nobr><tt>10</tt>),</nobr>
and with or without exponent (i.e., <nobr><tt>1.0E-3</tt>,</nobr>
<nobr><tt>1e-3</tt>,</nobr> or <nobr><tt>0.001</tt>).</nobr> Integer values
(like the number of chemical components) can not contain a decimal point or
an exponent.</p>
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